I googled and got many different views. Some say, wet food can be left out for 4hrs without much of a problem while some say 1/2hr is the max. Do you leave out wet food at all? clear whatever unfinished food immediately? or just leave it out until kitty finish at his own pace which can mean many hrs later? or feed that much that he can finish at one go? But even then, there are still times they don't eat immediately, do you still clear? or leave it out?